GE has installed half of the 66 Haliade 150-6MW turbines at the 396MW Merkur offshore wind farm in the German North Sea.
Last week one of the machines generated its first power on mini-grid mode.
Nacelles, blades and tower pieces for the remaining 33 turbines will be shipped to the project's logistical hub in Eemshaven, the Netherlands, where local teams will perform pre-assembly works.
GE is due to finish turbine installation in September and commissioning procedures will continue until year-end.
The wind farm is expected to be fully commissioned in 2019.
Image: Haliade turbine at Merkur (SPS Wind)